SBA Mock Test 3 - Electricity & Circuits

As resistors are added in parallel to a circuit, the total resistance will __________.

• increase

• decrease

• stay the same

• cannot be determined

The four diagrams below show the voltage-current graphs for four electrical devices. Which of the graphs shows a resistance that is constant while current is increasing?

• 
• 
• 
• 

A student wants to measure the current through the resistor R₁ for the circuit. Where should the student hook up an ammeter to measure the current through resistor R₁?

• point A

• point B

• from point B to D

• from point B to C

If the battery is the same for all the circuits below, in which setup will the bulb or bulbs glow the brightest?

• 
• 
• 
• 

Two of the ammeters are labelled. What is the total current flowing through the circuit?

• 1.5 A

• 2.5 A

• 4.5 A

• 6.0 A

Refer to the circuit diagram. What is the current reading in ammeter Y?

• 1.5 A

• 4.5 A

• 6.0 A

• 10.5 A

Refer to the circuit diagram. Which lamp has greater light intensity?

• Lamp 1

• Lamp 2

• Both lamps have the same brightness.

• cannot be determined

If a cell has a voltage of 8.5 V, then it means that _________.

• it delivers 8.5 joules of electrical energy per coulomb of charge

• the potential difference between the terminals of the cell is equal to 8.5

• Both statements are correct.

• Neither of the statements is correct.

Three identical resistors are connected in series as shown in the schematic diagram. Which statement is WRONG about the circuit diagram?

• The current flowing through all the resistors is the same.

• The total resistance is equal to the sum of the individual resistances of each resistor.

• R₁ has the highest resistance, therefore the least current is flowing through it.

• The total voltage is shared equally by the three resistors.

Based from the circuit diagram, which statement is NOT TRUE?

• R₁ and R₂ are connected in series.

• R₃ and R₂ are connected in series.

• R₃ and R₄ are connected in parallel.

• R₂ and R₄ are connected in parallel.